until you feel fully awake. walking, eating, driving or engaging in other activities while asleep without remembering it the next day have been reported. abnormal behaviors may include aggressiveness, agitation, hallucinations, or confusion. in depressed patients, worsening of depression, including risk of suicide, may occur. alcohol may increase these risks. allergic reactions such as tongue or throat swelling occur rarely and may be fatal. side effects may include unpleasant taste, headache, dizziness, and morning drowsiness. stop fighting with your sleep. ask your doctor if lunesta is right for you. get lunesta for a co-pay as low as zero dollars at lunesta.com discover a restful lunesta night.